
gs-group {
    display: block; /* inline-block */
    /*width: 100%;*/
    /*height: 100%;*/
    
    display: -webkit-box;
    display: -moz-box;     /* OLD - iOS 6-, Safari 3.1-6 */
    display: -ms-flexbox;  /* OLD - Firefox 19- (buggy but mostly works) */
    display: -webkit-flex; /* TWEENER - IE 10 */
    display: flex;         /* NEW - Chrome */
    
    flex-direction: column;
    -ms-flex-direction: column;
    -webkit-flex-direction: column;
    
    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
    -ms-box-sizing: border-box;
    -o-box-sizing: border-box;
    box-sizing: border-box;
}

gs-group[padded] {
    padding: 1em;
}

gs-group > .root {
    height: 100%;
    width: 100%;
}

gs-groupborder {
    display: block;
    padding: 0.25em;
    border: 1px solid #999;
    
    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
    -ms-box-sizing: border-box;
    -o-box-sizing: border-box;
    box-sizing: border-box;
    
    -webkit-border-radius: 0.25em;
    -moz-border-radius: 0.25em;
    -ms-border-radius: 0.25em;
    -o-border-radius: 0.25em;
    border-radius: 0.25em;
}
gs-grouptitle {
    display: block;
    text-align: center;
    color: #999;
    font-style: italic;
    -webkit-touch-callout: none;
    -webkit-user-select: none;
    -khtml-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    -o-user-select: none;
    user-select: none;
    cursor: default;
}